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Method of monitoring line faults in a medium voltage network

a medium voltage network and fault monitoring technology, applied in liquid/fluent solid measurement, digital computer details, instruments, etc., can solve problems such as degradation in the quality of network components, and achieve the effect of simple and cost-effectiv

Inactive Publication Date: 2008-09-09
FMC TECH LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables comprehensive monitoring and early detection of faults, reducing the likelihood of power outages, improving service reliability, and lowering operational costs through proactive maintenance and efficient data handling.

Problems solved by technology

These faults may be indicative of the degradation in the quality of a network component.

Method used

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  • Method of monitoring line faults in a medium voltage network
  • Method of monitoring line faults in a medium voltage network
  • Method of monitoring line faults in a medium voltage network

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Embodiment Construction

[0038]The invention will now be more clearly understood from the following description of some embodiments thereof given by way of example only with reference to the accompanying drawings in which:

[0039]Referring to FIG. 1 there is shown a schematic representation of a medium voltage network, indicated generally by the reference numeral 1, comprising a substation 3 delivering electricity to a number of customers. (not shown) over a plurality of medium voltage power lines 5. A plurality of measurement sensors 7 are mounted on each of the lines, each of the measurement sensors having means to communicate (not shown) with a control centre computer 9 housed in the substation 3. The control centre computer is further provided with memory 11 for storage of measurement data.

[0040]In use, the control centre computer 9 transmits a synchronization signal to each of the measurement sensors 7 mounted on the power lines so that all of the measurement sensors monitoring a particular power line ar...

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Abstract

The present invention relates to a method of monitoring line faults in a medium voltage network (1) of the type comprising an electricity generating plant (3) supplying electricity to a plurality of customers over a network of medium voltage power lines (5), a control centre computer (9) and a plurality of measurement sensors (7) located remote from the electricity generating plant on the medium voltage power lines, each of the measurement sensors (7) further comprising three individual measurement units, each measurement unit mounted on a different phase of the medium voltage power line (5) with respect to the other measurement units of that measurement sensor, and each measurement sensor (7) having means to communicate with the control centre computer (9). The method includes the steps of synchronizing the measurement sensors (7) and thereafter calculating the out of balance current for the medium voltage line (5) on a cycle by cycle basis. On the measurement sensor (7) detecting a fault in the line a line fault measurement report is sent to a control centre computer (9) for further analysis. The method allows for the determination of the likely cause of a fault as well as the likely location of a fault.

Description

RELATED APPLICATIONS[0001]The subject application is a U.S. National Stage application that claims the priority of International Application No. PCT / IE2005 / 000062, filed on 07 Jun. 2005, which claims the priority of Irish National Application No.: S2004 / 0391, filed on 04 Jun. 2004.FIELD OF THE INVENTION[0002]This invention relates to a method of monitoring line faults in a medium voltage network.BACKGROUND OF THE INVENTION[0003]Nowadays, due to the deregulation of the Electricity Sector and in particular the deregulation of the medium voltage networks, the business of supplying electricity to customers over the medium voltage network is becoming more and more competitive. Providers of electricity are always looking for new ways to cut the costs of supplying the electricity to their customers. At the same time, the electricity providers are also being forced to provide a more reliable service to their customers with as few interruptions to the power supply as possible in order to sat...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01F19/00G01R31/08H02H3/26H02H7/26H02J13/00
CPCH02H7/261G01R31/08
Inventor MCCORMACK, MICHAEL ANTHONYO'SULLIVAN, CHARLES BRENDAN
Owner FMC TECH LTD
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